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Is there a guide on how to expose an antlet running on antsle nano to the internet?

I have a 4GB Antsle Nano. A debian6 (arm64) is running over 2 cpus and 2GB of memory. In this, I have a NetCore3.1 application with a REST API, that accepts income messages on ports 5000 (http) and 5001 (https)

My Setup is like this

Internet ====> Router ====> AntsleNano ========> AntletDebian10
                                           (my internal nano IP)            service listening on 5000, 5001


I have my nano, directly connected to my router.

In the antlet, I am accepting all in the firewall

~ # iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

I have a port forwarding rule enabled
Protocol: tcp
Source IP:
Source Port: 5177
Destination antlet: debian10
Destination port: 5001

I have also enabled instantSSL, in

Obviously, when i launch my application and i locally call wget to localhost:5001/api/hello I receive the expected answer

Eight now i am trying to access the and i get this error:

Error: connect ECONNREFUSED

I have also did port redirection in my router (5177 from the outside to 5177 in, but the error is the same.

So, there are my questions:

  • Is the any step by step guide around that can explain how to make it so i can access the services on port 5001 from the outside?
  • Do i have to do port redirection on my router (the one that the ISP gave me)?
  • How can i test the different parts of the connection?
  • I also read somewhere that i should make it so the antlet should use my router as the DNS, but i'm not sure how to access it. Should i do another port redirection for this?

Any ideas?